What is the invisible force that pulls objects toward Earth?
Gravity
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15
the force is called an object’s ______.
weight
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baam
Lose 15 points!
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rocket
Go to first place!
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rocket
Go to first place!
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lifesaver
Give 20 points!
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15
What causes this force?
Gravity (Earth's pull).
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banana
Go to last place!
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magnet
Take 10 points!
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rocket
Go to first place!
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thief
Give points!
5
10
15
20
25
15
What units are forces measured in?
Newtons (N).
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15
If an object has a mass of 2 kg, what is its weight on Earth?
20
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15
What tool measures WEIGHT?
Force meter (forceometer)*
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15
Imagine a boy standing at different places around the world. The boy is holding a yo-yo at the end of its spring. The yo-yo is shown at the top of the picture. Copy the drawing. Then draw the string and yo-yo as it would hang in the other
In all three drawings, the yo-yo will hang straight down (↓) because gravity always pulls objects toward Earth's center.
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15
Which unit is used to measure WEIGHT?
Newtons (N)
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15
What is the difference between this force on the Moon compared to Earth?
The force (weight) is 6 times weaker on the Moon. Example: If you weigh 60 N on Earth, you’d weigh 10 N on the Moon.
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heart
Other team wins 20 points!
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magnet
Take 10 points!
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shark
Other team loses 25 points!
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baam
Lose 20 points!
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15
What happens if forces are BALANCED?*
The object doesn’t move* (Equal push/pull = no change!) *Example:* A book on a table has balanced forces.
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15
Who discovered gravity by watching an apple fall?*
